Steam-boiler



No. 608.065, Patented July 26, |898. E. J. MOORE.

STEAM BOILER.

(Application filed Dec. 4, 1897.) (No Model.) 4 Sheets-Sheet I.

No. 608,065. Patented July 26, |898. E. J. MOORE.

STEAM BOILER.

(Application filed Dec. 4, 1897.)

4 Sheets-Sheet 2.

(No Model.)

TN: Nonms PETERS co, Pnofoumo., WASHINmOrf, u. c.

No. 608,065. Patented July 267 |8918. E. J. MOORE.

STEAM BUILER.

\Applcaton led Dec. 4, 1897.) (No Model.) 4 Sheets-Sheet 3.

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a mr wwf( Patented my 26, 189s.

E. .1.0010066l STEAM BUILER. (Application filed Dec. 4, 1897.)

4 Sheets-Sheet 4.

OOOOOOOOO GOOGOOOO OOGOO0.000 OOOOOOO IlNrTnn STAT-nsf I-ATnNT EDVARD`J. MOORE, OF PHILADELPHIA, PENNSYLVANIA.

STEAM-Bomen.

SPECIFICATION forming part of Letters Patent No. 608,065, dated July 26,18.98. l Application filed December 4,1897. Serial No. 660,770. (Nomodel.)

To alt whom t may concern:

Be it known that I, EDWARD J. MOORE, aI citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Steam-Boilers, of which the following is aspecification.

My invention relates to certain improvements in tubular steam-boilers,especially of the marine type, and while my invention is especiallydesigned as a marine boiler it will be understood that it may be used asa stationary boiler.

The object of my invention is to provide the greatest amount ofheating-surface in the least amount of space and to so arrange the partsthat the boiler is kept at an even temperature at all times.

A further object of the invention is to so arrange the parts that thegases arising from the layer of fuel when iirst spread will bethoroughly consumed; and a still further object of the invention is toso arrange the parts that access maybe had to all vital parts of theboiler. These objects I attain in the following manner, reference beinghad to the accompanying drawings, in which- Figure 1 is alongitudinalsectional view of my improved steam-boiler, the tubes, headers, and drumnot being in section, so as to more clearly illustrate the passage ofthe products of combustion. Fig. 2 is a longitudinal sectional viewthrough the boiler, including the tubes, headers, and drums toillustrate the water circulation. Fig. 3 is a transverse section on theline 3 3, Fig. l. Fig. 4. is a transverse section on the line 4 4,Fig. 1. Fig. 5 is asectionalplan view through the central header. Fig. 6is a detached perspective view of the central header. Fig. 7 is aperspective view of one of the end headers. Fig. 8 isa perspective viewof the muddrnm. Fig. 9 is a perspective view of the damper. Fig. 10 is aperspective view of the saddle and side bars. Fig. 11 isa sectional viewof a portion of the central header. Fig. 12 is a view showing anarrangement when two drums are used; and Fig. 13 is a view illustratinga modification, showing three` transverse drums instead of thelongitudinal drum or drums.

i My improved boiler .may be termed a twin boiler, as it has twofireplaces, two

sets of heating-tubes, and one or more water and steam drums common toboth sets of heating-tubes.

A is the casing of the structure, made in the present instance of sheetmetal and masonry.

i a a are the two 'front plates, having firedoors a and ash-pit openingsa2.

B B are the two rechambers, having grates b b', and below the grates arethe ashpits B2 B3. Separatingthe two fire-chambers is a centralcombustion-chamber C, communicating with the hre-chamber B` throughpassage c and communicating with the rechamber'B through passage c.

Below the combustion-chamber C are two air-chambers C C2, separated fromthe cornbustion-chamber by perforated partitions c2 c?. These partitionsare of the form shown in Fig. 1, so as to give the products ofcombustion as they pass thro ugh the combustionchamber a rollingmotion.The perforations in the partitions are tapered, so that the air willpass from the air-chambers to the combustion-chamber in the form ofjets, and, furthermore,the openings are so proportioned that dust willreadily pass'through the openings and into the air-chambers, while coalor clinkers that in some instances pass beyond the grates will becollected in the combustionchamber O and may-be removed either from thetire-chambers or from one side, if a doorway is made, as shown by dottedlines in Fig. 1.

D is the water and steam drum, extending the full length of the boilerand supported in any suitable manner.

' Depending from the drum D is a central header E and two end headers FF. These end headers are connected, respectively, to the central headerby inclined heating-tubes G G', so that the circulation of the water inthe boiler is down the central header E, through the inclinedheating-tubes G G", upthe end headers F F', and through Athe drum D tothe central header.

The central header E is connected to the drum D by a large tube E. Thistube issufiiciently large to admit of a man passing from the drum to theheader when repairs are necessary. p

The edges of the drum at the openings yare IOO connected by one or moretie-rods d., detachably secured to lugs on the drum. One end of the rodor rods may be uncoupled when access is to be had to the headers andturned back, so as to provide an uninterrupted opening.

The header E is made in the form shown in Figs. 2 and Ll, so as toprovide two flat tube-plates efor the tubes G and G', arranged at rightangles to the tubes. Consequently the central header is of greater widthat the bottom than at the top, and in ord er to insure the propercirculation of the water in this header I so form it at the base as tomake two legs E2, the space between the legs forming a portion of thecombustion-chamber C. I preferably extend circulating-tubes e' from oneleg to the other, and these tubes are curved in the present instance.From the fork of the two legs I may extend a vertical partition withinthe central header, as shown by dotted lines, if desired. l

The side plates e2 of the central header E, which are preferably dished,are made in single sheets and are secured to the flanged tubesheets eand to the flanged bottom sheet e3. The two tube-sheets are curved atthe top and overlap, forming a doubly-riveted seam, y

and each tube-sheet overlaps the bottom sheet near the bottom of eachleg, forming a doublyriveted seam. In order to stiffen the structure,corner-braces e4 are placed at intervals,which tie the tube-sheets tothe side plates. By dishing the side plates stays are dispensed with.

I preferably make a manhole e5 in one of the side plates e2 and alsomake clean-out openings e in the side plates near the bottom of eachleg.

Directly below the central header E is a mud-drum II, having a fiatbase, so that it will not tilt or roll. I preferably make this of castmetal.

The mud-drum IfI is connected to the legs E2 by pipes 7i, so that anysediment or dirt settling in the legs will pass through the pipes h tothe mud-drum I-I, which is provided with blow-off pipes h' h'. The pipes7L extend through the combustion-chamber C and are preferably staggered,and the mud-drum I-I is below the combustion-chamber and between the twoair-chambers C' C2. The drum has one or more clean-out openingsaccessible from vone of the air-chambers.

The end headers FF' are made in the present instance of two sheets ofmetal suitably punched and pressed to receive the ends of theheating-tubes and caps. The iianges of the two sheets overlap at theedge and are united by a single or double row of rivets. They are alsounited at intervals by tubular stay-rods.

The upper portion of each end header is shaped and [ianged to conform tothe drum to which it is attached, and the drum has a series of openingsin it where the end header is attached, so as to allow for freecirculation and without materially weakening the drum. The end headermaybe made in two sections nippled together, as shown in Fig. l2, in someinstances. Y

The drumD may be slotted the entire width of the header and reinforced,if necessary, or tie-rods may be used.

The boiler is supported at several points, the central header at cc onthe foundation A', the end headers on the boxesa, which extend acrossthe furnace above the lire-door a', and the drum is not only supportedby the several headers, but rests on the frame at y y. It will be seenthat the structure is well supported and balanced and the parts canfreely contract and expand. Shoes are provided on,

each side of the central header at the foundation, so as to prevent theheader from sliding.

I is the flue, which extends on each side of the drum D, as shown inFig. 4, and communicates with the main combustion-chambers of thefurnace, as shown in Fig. I. In the upper portion of the flue is ahalf-damper I', pivoted at 1l', and extending from the pivot to the topof the central header E is a partition t', dividing the lower portion ofthe flue into two separate lues, either one of which can be closed bythe damper I'.

The pivot-shaft 1l of the damper extends out at one side beyond thecasing and has a `counterweighted arm I2, to which are connected the twooperating-cords 71H3. These cords pass under guide-wheels i4 and overWheels i5 and extend within easy reach of the stokers.

The damper is normally vertical, so that the products of combustiontravel up from the lire-chambers between lthe tubes around the drum tothe Hue.

Vhen one of the furnaces is freshly charged with fuel-say, for instance,the furnace B'- then the damper I' is turned down, as shown in Fig. 1,to cut oif the direct passage to the flue from the furnace B' and thesmoke and unconsumed gases are drawn through the centralcombustion-chamber C, where they are mixed with heated air from theair-chamber C2, which receives its hot air from one of the ash-pits, adamper being open, so that the air will pass to the combustion-chamber.The gases and hot air are thoroughly mixed in the combustion-chamber Cand are drawn into the lire-chamber B, where they mingle with theproducts of combustion from the fire therein and are consumed, givingoff the desired heat.

In order to prevent the gases passing up in close contact with thecentral header, I place deflectors jj at each side of the header, so asto make the gases pass directly over the bed of fuel. When the smoke isconsumed, the damper I' is released and it resumesits vertical position,allowing the products of combustion from each furnace to pass upindependently to the flue.

rlhe dampers b2 and b3 are hung to the framework of the furnace, andeach damper is operated by a rod b4 within reach ofthe stoker, and therod has a series of ratchet-teeth' IOO IIO

a drum, a single central header and two end4 h5, which engage with a lugon the frame, so that the damper can be set in any position.

The nue I is so formed as to straddle the drum and rests upon twosaddles 7c k thereon and also upon two saddles 7c 7c on the centralheader. It is thus supported by the boiler structure.

A protecting-plate K is placed over the upper portion of the drum Dwithin the flue I, so as to protect it. This plate extends down on eachside of the boiler and is secured to the lues by the saddles 7i: 7c.

As shown in Fig. 5, the end plates of the central header E arepreferably dished, thus dispensing with internal stays, although in someinstances they may be flat and stays used without departing from theessential features of my invention.

I mount on the drum D a series of saddles n, preferably made in twopieces flanged and secured together at the center. These saddles extenddown on either side of the drum and are secured to longitudinal bars mm, having reversely-arranged flanges. The saddles are attached to oneilauge and the side plates of ,the boiler attached to the other llange.Suitable non-conducting covering can be placed above the drum andsupported by the bars m m, as shown in Fig. 3. arrangement is notpunctured with a series of rivet-holes and it is allowed to expandfreely and independently of the casing.

It will be understood that in large-sized boilers the tube-plates of thecentral header may be made in two sections riveted together, as shown inFig. Il, and that the end headers may be made in two or lnore sectionscoupled i together, and two or more drums may be used with the centraland end headers, as shown in Fig. 12. In the modification, Fig. 13, Ihave illustrated three transverse drums connected together in the placeof one or more longitudinal drums.

I prefer to make the two lower rows of heating-tubes somewhat largerthan the others, so as to allow more water to circulate in the lowerportion of the boiler, thus preventing,

these lower tubes from giving out first, as is the case when all thetubes are of the same diameter.

While I have shown the lire and ash-pit openings at the ends of thestructure, they may be at one side in some instances, dependingaltogether on thelocation of the boiler.

Iclaim as my invention*- f l. The combination in a steam-boiler, of

headers suspended from said drum and closed at the bottom, heating-tubesextending from each side of the central header to the end headers, aIirechamber under each set of heating-tubes, and a passage under thecentral header communicating with the two firechambers, substantially asdescribed.

2. The combination in a steam-boiler, of a drum, a singletriangularcentral header having tube-plates at each side, end headers The drum bythis combustion chamber raked on a line with the tube-plates of thecentral header and closed at the bottom and inclined tubes extendingfrom the tube-plates of the central header to the end headers,substantially as described.

3. The combination in a steam-boiler, of a drum, a single triangular`central header having tube-plates at each side and communieating at thetop with the drum and forked at the bottom to form legs, two end headersand .inclined tubes extending from the central header to the two endheaders, substantially as described.

l. The combination in a steam-boiler, of

\ a drum, a triangular central header, and heating-tubes, a neckconnecting the header with the drum, lugs on the drum at each side ofthe neck-opening, and one or more pivoted stays extending across thedrum at the opening and detachably secured to the lugs so that accesscan be had to the neck, substantially as described.`

5. The combination in a steam-boiler, of a drum, a single central headerand heatingtubes extending from each side of said header, and avertically-arranged partition in the lower portion of the header,substantially as described.

6. The combination in a steam-boiler, of a single central header andheating-tubes, said tubes extending from each side of the centralheader, a nre-chamber under eachl set of tubes at each 'side of thecentral header, and a combustion-chamber directly under the centralheader and communicating with both lire-chambers, substantially asdescribed.

7. The combination in a steam-boiler, of two fire-chambers, ar centralcombustionchamber, a central'header forked at the bottom to form twolegs, and an enlargement of the central combustion-chamber,substantially as described.

8. The combination in a steam-boiler, of a single central header,heatingtubes connected thereto, two fire-chambers, a central under thecentral` header, and air-ducts opening into the said combustion-chamber,substantially as, described.

9. The combination in a steam-boiler, of a single central header,heating-tubes con-f nected thereto, fire-chambers, a centralcombustion-chamber communicating `with the fire-chambers, twoair-chambers under the combustion-chamber and communicatingA therewith,and dampers for each chamber, substantially as described.

10. The combination in a steam-boiler, of a central header,heating-tubes connected thereto, two lire-chambers, a centralcombustion-chamber communicating" with the said fire-chambers, and twoairchambers,one conimunicating with the ash-pit of one iire-chamber, theother Withthe ash-pit of the other fire-chamber, and both communicatingwith the central combustion-chamber, substau` tiall y as described.

IOO

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11. The combination in a steam-boiler, of a central header,heating-tubes connected thereto, a central combustion-chamber, under thesaid header, a mud-drum at the bottom of the combustion-chamber andtubes connecting the header with the drum, substantially as described.

12. The combination in a steam-boiler, of a central header,heating-tubes connected thereto, said header being forked at the base toform two legs, and tubes extending from one leg to the other,substantially as described.

13. A triangular header for steam-boilers, forked at the base to formtwo legs, the top of the header and the bottom of each leg beingrounded, said header having its inclined sides in the form of flattube-sheets, substantially as described.

14. A triangular header adapted to be suspended from a drum, of asteam-boiler, said header having dished end plates and fiat tube-sheetsat each side secured to the end plates, said tube-sheets adapted toreceive heating-tubes, substantially as described.

15. A triangular header for steam-boilers, forked at the bottom formingtwo legs, flat tube-sheets and bottom sheets flanged at each end, andend plates secured on theoutside to the flanges of the tube-sheets andbottom sheets so that all the ianges will be within the header,substantially as described.

16. The combination in a triangular header for steam-boilers, having iattube-sheets at each side, and end plates withv a series of corner-bracessecuring the side plates to the end plates in addition to the rivets,substantially as described.

17. The combination in a steam-boiler, of a drum, a central triangularheader, inclined end headers, heating-tubes extending from thetriangular header to the end headers, a mud-drum below the triangularheader and tubes connecting the mud-drum with the base of the header,substantially as described.

18. The combination of a triangularheader, and inclined heating-pipes, amud-drum connected to the header, said mud-drum having a hat base as andfor the purpose specified.

19. The combination in a steam-boiler, of two fire-chambers, a drum, asingle central header, two end headers, heating-tubes extending from the-central header to the end headers, a combustion-chamber between the twofireplaces and under the single central header, said combustion-chamberbeing depressed at the center, air-chambers, and openings in thedepressed portion of the combustion-chamber communicating l, with theairchamber, substantially as described.

20. The combination in a steam-boiler, of two hre-chambers, acombustion-chamber between the two, said combustion-chamber beingdepressed, tapered openings in the bottom of said combustion-chamber,and air-chambers communicating with said openings, substantially asdescribed.

21. The combination in a steam-boiler, of

a drum, a central header, end headers, heating-tubes, twov fireplaces, acentral combustion-chamber enlarged at the center and narrow passagesconnecting the said combustion-chamber with the lire-chambers,substantially as described.

22. The combination in a steam-boiler, of a central header andheating-tubes, a central combustion-chamber under the central header, afire-chamber at each side of the central combustion-chamber,air-chambers communicating with the combustion-chamber, and oneair-chamber communicating with the ash-pit of one tire-chamber and theother airchamber communicating with the ash-pit of the otherfire-chamber, and handled dampers for each air-chamber, the handles ofsaid dampers extending to the outside of the furnace, substantially asdescribed.

23. The combination of two fire-chambers, a single central header andheating-tubes, a passage under the central header forming acommunication between the two tire-chambers, two outlet-passages for theproducts of combustion, and means for closing one or other ot' saidoutlets so that the gases from one fire-chamber will pass under thecentral header to the other fire-chamber and over the fuel therein,substantially as described.

24:. The combination of two fire-chambers, a single central header,heating-tubes in the combustion-chamber of each fire-chamber, a passageunder the central header communieating with both nre-chambers above thegrates, a single stack, a partition extending above the central headerand into the stack so that the gases from one tire-chamber will passover the fuel in the other fire-chamber to the stack, substantially asdescribed.

25. The combination of a casing of a steamboiler, having a central frameor foundation A', bearing-boxes as, and bearings y y, two fire-chamberson each side of the foundation A', a drum resting on the bearings y y, acentral header resting on the frame or foundation A', and end headersresting on the boxes a3 and connected to the central header byheating-tubes, substantially as described.

26. The combination of two fire-chambers, a passage communicating withthe two chambers, adrum, a central header and end headers connected tothe drum, heating-tubes, with delectors at each side of the centralheader, substantially as described.

27. The combination in a steam-boiler, of one or more drums,a series ofsaddles mounted on the drum or drums, and longitudinal bars at each sideo f the drum or drums and secured to the saddles for sustaining asuitable covering, substantially as described.

28. The combination in a steam-boiler, a drum, a series of saddlesmounted thereon, a longitudinal bar on each side of the drum, each barhaving reversely-arranged flanges, the said saddles being secured to oneflange, and the side plates of the frame secured to the other flange,substantially as described.

29. The combination in a steam-boiler, of a drum, a single centralheader connected to the drum, a ue for the products of combustiondirectly above and extending on each side of the drum and communicatingwith the two combustion-chambers, a partitionplate extending from thecentral header up into the ilue, substantially as described.

30. The combination in a steam-boiler, of two fire-chambers, a drum, asingle central header connected to the said drum, end headers andheating-tubes, and a flue for the products of combustion adapted tostraddle the drum and rest upon the central header, substantially asdescribed.

3l. The combination in a steam-boiler, of two fire-chambers, a drum, acentral header, end headers, and heatingtubes,a lue adapted to straddlethe drum and to rest upon the central header, leaving passages on eachside of the drum, and a vertical partition extending from'the centralheader up to a point above the drum so as to divide the lower portion ofthe flue, substantially as described.

32. The combination in a steam-boiler, of two fire-chambers, a drum, asingle central header connected to the drum, heating-tubes, a flue cutaway so as to straddle the drum and leave passages at each side thereof,with a saddle-plate extending over the drum within the flue and securedto the Hue, substantially as described.

33. The combination of a drum, a central header, and end headers,heating-tubes, a

ilue extending down on each side of the drum and communicating with thecombustionchambers of the boilers, a central partitionplate extendingfrom the central header up to a point' above the drum, with a damper,and means vfor operating said damper to cut oft one or the otherpassage, substantially as described.

34:. The combination of a drum, central header and heating-tubes, a fluecircular in cross-section vand cut awayso as to stradldle the drum, saidflue being larger in diameter than the drum so as to form passages oneach side thereof, said flue also enlarged at the center and havingsaddles resting on the drum and central header, substantially asdescribed.

35. The combination of a drum, lcentral header and. heating-tubes, of aflue, a partition dividing the flue into two parts, a pivoted damperadapted to open both parts of the ilue or close one or the other, alever and weight for keeping the damper normally vertical, and ropes orchains extending over sheaves to a point easy of access to the stokers,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWARD J. MOORE.

WVitnesses:

WILL. A. BARR, Jos. H. KLEIN.

